Lilian Benningsen (17 July 1924 – 12 June 2014) was an Austrian operatic mezzo-soprano and contralto. She made an international career based at the Bavarian State Opera for decades, where she first ap
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371b2b2bf71eb095415d5257d340ed0acaf71269b1b216313b5722545a9e440e. Chain 2 (Bitcoin): anchored in block 953907 (2026-06-16T07:39:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/16bbb017-aa45-4168-b23c-633792a06f8d.json and https://artists.proofprofile.net/proofs/artist/16bbb017-aa45-4168-b23c-633792a06f8d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Janáček: Výlety páne Brouckovy, JW I/7 (Sung in German) [Bayerische Staatsoper Live]
Richard Strauss: Die Frau ohne Schatten, Op. 65, TrV 234 (Recorded 1954) [Live]
R. Strauss: Die schweigsame Frau, Op. 80, TrV 265
North German Radio Philharmonic Orchestra
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bfeb7ac46b9bd8ee86c2b948ca4aee19a6601dbb9ccdf6c19c9f7c17813925. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U2006280.
Gianni Schicchi: "O, mio babbino caro" - Live In London / 1994
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3cd84e8b68de619a9f6b379bbf93c54d2653a453f185a0e10ca2fa4594846a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBA9450130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e65ade6fe46aafd667f0478fd817c670dd86f696ca30dc792a10ccdc1abb7f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078241602.
Chants d'Auvergne: 13. Malurous qu'o uno Fenno
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883f360a617e8929b1364bef9e632a2b1bd38d8de8e83bb3828dc213f1e26fd3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078241613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387e2543c0f1bc19d6661a78ada1a9fe4407903ae3fe20685ea5f6ebca542f09. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508325103.
Zaide, K.344 / Act 1: "Ruhe sanft, mein holdes Leben"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06760cd1304eba9be374327d777fcf783cfb38acee64adc255e8d2dad558093e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508106801.
Bachianas brasileiras No. 5 for Soprano and Cellos, W.389: Aria (Cantilena)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85750eecf322238a8efcd60ac8fef404a510d39a4f1d99531104c2eda5bfc2d8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078400331.
Ein deutsches Requiem, Op. 45: 5. "Ihr habt nun Traurigkeit"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea1a5d0771289e1b5c2ef573c0bcb276101f28902bd309a9c8e88e24b8b2558. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077810015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d9b36c734e67475bc27c3612eb64d99d81446ec3465b65b96cc44399e61692. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078940106.
Tosca / Act 2: "Vissi d'arte, vissi d'amore"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06a0cc5002ad42a35eb031d48adc6fe9f2c26abd0f07c7a930785d8228f0e04. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078612050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0134439ee0a3e50e8e27ec8e545b69383e11e3f55c666cc958d9ca29fcf5b6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078710644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cddca6d45a437db511064b232c923ecc8609b6d580831def7aa148bb4356ff2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508325107.
Die tote Stadt / Act 1: Glück, das mir verblieb (Mariettalied)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0733b70b4e72a8c1aabc701821a105ad364e443a43a9ed511a7f5f47387453d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBA9450150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9894eaa61845960a89aa0fd86311c86a1ede027f3b6dfda884380ff9b853874b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078940101.
La traviata / Act 1: "Follie! Delirio vano è questo!" - "Sempre libera"
Orchestra del Maggio Musicale Fiorentino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282890ccb0c342a5184b5acb2f848ddd9e2e7f60a79b974e7a3e732f22a8411a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA509104309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec2518c60e712c95403e7b3f89bd82d3a8ba637b3cf71c163ea3e196667d7e8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBA9450190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381cb7c36954c27213984c2ce24786eed8bf10bcbcd24e9575fd0e4c6915adb1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078540112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032f6e8752a8d10dad0054e56018cc0a4acf57a3f2cb7ad9180512b16e477130. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078740106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70212889981a6137cc365755ba88b1f3448510616c2c0162239f0e4a92a6c673. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078740110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3c3ec57653708a125bebb25cc179000748020b4cdc5353327a0162a9bfce4c. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF078740102.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Nicolai: Die lustigen Weiber von Windsor (The Merry Wives of Windsor)
Egk: Französische Suite nach Rameau & La tentation de saint Antoine (Mono Version)
Richard Strauss: Elektra, Op. 58, TrV 223 (Recorded 1955)
Mozart: Le nozze di Figaro (Mono Version)
R. Strauss: Elektra, Op. 58, TrV 223 (Recorded 1955)
Strauss: Die Frau ohne Schatten, Op. 65, TrV 234 (1954)
Engelbert Humperdinck: Hänsel und Gretel
Pyotr Ilyich Tchaikovsky: Eugen Onegin, Op. 24 (Complete Recording)